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I am planning to turbo my car. I heard that Vishnu turbo kit is very good for Impreza 2.5 RS. and also the tech II is a very good product. I am willing to push my car up to around 280hps, probably go for stage 3 kit. What do u think I need ? And how much do I have to spend? How much does it cost for lavbor of installiug the kit and everything?

13 Years of RS

I am planning to turbo my car. I heard that Vishnu turbo kit is very good for Impreza 2.5 RS. and also the tech II is a very good product. I am willing to push my car up to around 280hps, probably go for stage 3 kit. What do u think I need ? And how much do I have to spend? How much does it cost for lavbor of installiug the kit and everything?

You'll also at least need an upgraded clutch, and a lighter flywheel would help too. And if you are planning on pushing that much power, you might want to start looking into transmission upgrades. Second gear has a rep for gernading one you get to about 250hp. I've hear that you can replace the stock mainshaft in the tranny with the mainshaft from a Legacy Turbo, same size and gearing, stonger gearset. That might be a good way for you to look, as 280hp doesn't really warrent a dog-box, I don't think. And if you are going to put that kind of power to the ground, don't forget to upgrade your brakes and suspension to be able to handle the power.

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I think that you need to do a bit more research on what you want out of your car. But, from what it sounds like, you just want an RS with a turbo .

Shiv does make great products, but look to spend upwards of $6000 to complete the total Vishnu setup that you speak of. A new tranny would be a VERY good idea at the power levels you are shooting for. TEC-II as well, very good way to get your engine running with a turbo setup.

As far as installing, that can differ from shop to shop, just make sure you get it done by someone who knows Subaru. Most shops charge around $60 an hour, and figure maybe 5-7 hours JUST for the turbo install.

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SWAT- I think that you should shoot for how much horsepower you want, then decide on a boost level. Different horsepower levels will require different amounts of boost. On 10-12 psi, with a WELL tuned engine, like one with a TEC-II, you could probably shoot for something around 280-300 @ the wheels. I *think Shiv made 292 @ the wheels @11 psi, on stock internals.

If you really want to be able to drive the car and not baby your tranny all the time, then yes you will need to upgrade to a dog box or synchro mesh gears, which are just basically hardened gears with a lot of the same feel as stock.

The cluctch will definetly be of concern at high HP/Torque levels. You have several options, including ACT and Clutchmasters, both of which would probably be fine for what you are looking for.

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Well, tuning can involve checking your A/F ratios to figure out if your running rich or lean, then attempting to fix your problem. If your using a RRPFR, then you might want to mess around with your fuel pressure to add more fuel, or take away fuel pressure to make your ratio leaner.

Tuning encompasses many things, but it can be done MUCH more accurately with an aftermarket ECU where you can adjust your spark timing or A/F ratios to very precise amounts.